Properties of the Number 57138

Fifty-Seven Thousand One Hundred Thirty-Eight

Basics

Value: 57137 → 57138 → 57139

Parity: even

Prime: No

Previous Prime: 57131

Next Prime: 57139

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 89 × 107

Divisors: 1, 2, 3, 6, 89, 107, 178, 214, 267, 321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111100110010

Octal: 157462

Duodecimal: 29096

Hexadecimal: df32

Square: 3264751044

Square Root: 239.03556220780203

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) is the smallest number m such that for the n-digit number s=10^n-1+ m, 10·s+1, 10·s+3, 10·s+7 and 10·s+9 are primes. A97639

Numbers k such that 2·10^k + 7·R_k - 6 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A98960

a(0) = 0, and for n > 0, (a(n)) gives the indices n for which d(n) > d(k) for k < n, where d is the difference sequence of (cos k + sin k). A299639

Add (n mod 10)*10^n-1 to the previous term, with a(0) = 0. A57138